Thomas J. Klein, MD, PhD

Radiation Oncology



Dr. Klein is a Board Certified Chief Radiation Oncologist and the Section Chief for Radiation Oncology at Good Samaritan Medical Center in West Palm Beach, FL. He completed his undergraduate degree cum laude from Duke University and his M.D. and Ph.D. degrees from Mount Sinai School of Medicine in New York City. Dr. Klein completed residency at Yale University School of Medicine in New Haven, CT, where he was Chief Resident in Radiation Oncology.

Dr. Klein’s experience and compassion for his patients is consistently reflected in the high quality care he provides and has been recognized with numerous honors and awards, including multiple Top Doctors awards for Palm Beach County. He frequently appears on local TV news affiliates, including ABC, CBS, NBC, and FOX, as an expert voice in the local cancer community. Dr. Klein has also worked to improve the lives of cancer patients by advocating on their behalf to members of Congress.


21st Century Oncology
1309 N. Flagler Drive
West Palm Beach, Florida 33401
561-721-1009 Fax


Duke University
BS, Biology
Durham, NC
Mount Sinai School of Medicine
PhD, Biomedical Sciences
New York, NY
Mount Sinai School of Medicine
New York, NY
Georgetown University Medical Center
Transitional Medicine Intern
Washington, DC
Yale University School of Medicine
Radiation Oncology
New Haven, CT

Clinical Expertise and Interests

Board Certifications
Board Certified - Radiation Oncology
Clinical Interests
Prostate, Breast, Lung, Colorectal, Head & Neck, Gynecological, Gastrointestinal, Brain, Lymphoma, Metastatic Malignancies

Awards and Honors

Finalist, Burroughs-Wellcome Fund Carrer Award for Medical Scientists, 2012; Research Resident Grant, RSNA 2011-2012; Introduction to Academic Radiology Program Awardee, RSNA/AUR/ARRS, 2010; Merck Manual Award to Outstanding Students in Medical Studies, M

Current and Past Positions

Current Position

21st Century Oncology - Radiation Oncologist
Loxahatchee, FL